Siemens Desigo RXB Technical Manual page 65

Technical data
Power supply
Operating data
Inputs
Signal inputs D1, D2
(for volt-free contacts)
Measured value input B1
Outputs
AC24 V triac outputs , Y1 ... Y4
Ports/interfaces
Interface to room unit
KNX / EIB bus
Siemens
Building Technologies
 In the event of a long-term short circuit (approx. 4 minutes) or overload,
the thermal fuse in the transformer may trip.
Subsequently, the device must be exchanged.
 There is no protection against accidental connection on the AC 24 V side.
 Mains AC 230 V for the supply must be disconnected before plugging and
unplugging the terminal blocks (danger of electric shock!)
 If serial wiring is applied on the terminal block 19/21, the connection will
be interrupted if the block is removed from the controller (the jumpers
19-19 and 21-21 are on the PCB, not in the block, see terminal diagrams on
pages 11 and 12).
Operating voltage
Rated voltage
Frequency
Power consumption with connected field devices
Internal fuse
Control algorithm
Quantity
Contact voltage
Contact current
Contact transfer resistance
Contact insulation resistance
Switch time:
Compatible temperature sensors
Quantity
measuring range
Sensor current
Resolution
Measuring error at 25 °C sensor temp. (without cable) max. 0.5 K
Quantity
Output voltage
Output current
Total nominal load
(at both outputs simultaneously)
Number of room units connectable
Interface type for room unit
for ETS3 Professional / ACS
PPS2 baud rate
Baud rate on KNX / EIB bus
Interface type
Transceiver
Bus current
Baud rate
Bus topology
RXB24.1 – Room controller
AC 230 V ± 10 %
AC 230 V
50/60 Hz
Max. 12 VA
Thermal, non-resetting
PI
2
DC 16 V
DC 5 mA
Max. 100 
Min. 50 k
min. 20ms "ON", min. 20ms "OFF"
LG-Ni 1000
1
0 ... 50 °C
0.5 mA
0.1 K
4
AC 24 V ON/OFF, PWM or 3-position: +/–20%
(May exceed +20% with loads under 2VA)
Max. 0.5 A
Max. 9.5 VA (e.g. 2 thermic actuators, type
STP72E per heating and cooling sequence
1
PPS2
KNX / EIB bus
4.8 kbit/s
9.6 kbit/s
KNX / EIB (electrically isolated)
TP-UART
5 mA
9.6 kbit/s
Refer to KNX / EIB manual
(Reference documentation, see next page)
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CM2N3874en_04
02 Apr 2010